Mature embryo, Biology

Assignment Help:

Mature Embryo

A typical dicotyledonous embryo, as seen in a median longitudinal section, consists of an embryonal axis having two broad cotyledons. The portion of embryonal axis above the level of cotyledons is termed epicotyl which terminates in the plumule or stem tip. The cylindrical portion below the level of cotyledons is called the hypocotyl which terminates at the lower end in the radicle or root tip. The root meristems is covered by a well defined root cap.

The embryo of monocotyledons, possesses only one cotyledon. The grass embryos is highly specialized and has received a great deal of attention. It has a single cotyledon in the form of scutellum, which appears to be laterally attached to the embryonal axis. At its lower end the embryonal axis has the radicle and root cap, enclosed in an undifferentiated part of the embryo called coleorhiza. On one side the coleorhiza is given out a small outgrowth called the epiblast. The portion of embryonal axis above the level of attachment of the scutellum is termed epicotyl. It has a shoot apex with some leaf primordia, enclosed in a hollow foliar structure called the coleoptile.


Related Discussions:- Mature embryo

Littoral zone, Littoral Zone Plants of the littoral zone Two types ...

Littoral Zone Plants of the littoral zone Two types of plants occur here: Non-rooted phytoplanktons which include all kinds of algae occurring in the limnetic as wel

What is insulin pump, Insulin Pump An  insulin pump is a device used fo...

Insulin Pump An  insulin pump is a device used for the administration of  insulin, also known as continuous subcutaneous insulin infusion therapy. The device includes: - the

Which hormone influence maturation of the ovarian follicles, Q. After mense...

Q. After menses what is the hormone that influences the maturation of the ovarian follicles? The maturation of the ovarian follicles after menses is stimulated by the action of

Explain difference between sonication and homozinization, Homogenization is...

Homogenization is intensive blending of mutually related substances or groups of mutually related substances to form a constant of diverse insoluble phases (sometimes withaddition

Special structures of the avian digestive tube, Q. What are the special str...

Q. What are the special structures of the avian digestive tube and their respective functions? The crop has the function of temporary storage of ingested food and it is a more

Target tissues and target organs of the neurohypophysis, Q. Which are the t...

Q. Which are the target tissues and target organs of the neurohypophysis? The target organs of oxytocin are the mammary glands and the uterus and target organs of ADH are the k

Name the large intestine under which there is appendix, Name the sac-like, ...

Name the sac-like, blind pouch of large intestine, situated below the level of junction of the small intestine into the side of large intestine. At the lower portion of this pouch

Explain the main biological functions of the polysaccharides, What are the ...

What are the main biological functions of the polysaccharides? Polysaccharides have an energy storage function and a structural function. Polysaccharides incorporated by living

What is the rule for the pairing of nitrogen-containing base, Q. What is th...

Q. What is the rule for the pairing of nitrogen-containing bases in the DNA molecule? And in the RNA? Is this the last question appropriate? The rule for the pairing of nitroge

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd